64 строки
1.7 KiB
C
64 строки
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* include/linux/arch_topology.h - arch specific cpu topology information
|
|
*/
|
|
#ifndef _LINUX_ARCH_TOPOLOGY_H_
|
|
#define _LINUX_ARCH_TOPOLOGY_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/percpu.h>
|
|
|
|
void topology_normalize_cpu_scale(void);
|
|
int topology_update_cpu_topology(void);
|
|
|
|
struct device_node;
|
|
bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
|
|
|
|
DECLARE_PER_CPU(unsigned long, cpu_scale);
|
|
|
|
struct sched_domain;
|
|
static inline
|
|
unsigned long topology_get_cpu_scale(int cpu)
|
|
{
|
|
return per_cpu(cpu_scale, cpu);
|
|
}
|
|
|
|
void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
|
|
|
|
DECLARE_PER_CPU(unsigned long, freq_scale);
|
|
|
|
static inline
|
|
unsigned long topology_get_freq_scale(int cpu)
|
|
{
|
|
return per_cpu(freq_scale, cpu);
|
|
}
|
|
|
|
struct cpu_topology {
|
|
int thread_id;
|
|
int core_id;
|
|
int package_id;
|
|
int llc_id;
|
|
cpumask_t thread_sibling;
|
|
cpumask_t core_sibling;
|
|
cpumask_t llc_sibling;
|
|
};
|
|
|
|
#ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
|
|
extern struct cpu_topology cpu_topology[NR_CPUS];
|
|
|
|
#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
|
|
#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
|
|
#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
|
|
#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
|
|
#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
|
|
void init_cpu_topology(void);
|
|
void store_cpu_topology(unsigned int cpuid);
|
|
const struct cpumask *cpu_coregroup_mask(int cpu);
|
|
void update_siblings_masks(unsigned int cpu);
|
|
void remove_cpu_topology(unsigned int cpuid);
|
|
void reset_cpu_topology(void);
|
|
int parse_acpi_topology(void);
|
|
#endif
|
|
|
|
#endif /* _LINUX_ARCH_TOPOLOGY_H_ */
|